move_group.cpp

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/* Author: Ioan Sucan */
 
#include <moveit/moveit_cpp/moveit_cpp.h>
#include <moveit/planning_scene_monitor/planning_scene_monitor.h>
#include <tf2_ros/transform_listener.h>
#include <moveit/move_group/move_group_capability.h>
#include <moveit/trajectory_execution_manager/trajectory_execution_manager.h>
#include <boost/tokenizer.hpp>
#include <moveit/macros/console_colors.h>
#include <moveit/move_group/move_group_context.h>
#include <memory>
#include <set>
 
static const std::string ROBOT_DESCRIPTION =
    "robot_description";  // name of the robot description (a param name, so it can be changed externally)
 
static const rclcpp::Logger LOGGER = rclcpp::get_logger("move_group.move_group");
 
namespace move_group
{
// These capabilities are loaded unless listed in disable_capabilities
// clang-format off
static const char* DEFAULT_CAPABILITIES[] = {
   "move_group/MoveGroupCartesianPathService",
   "move_group/MoveGroupKinematicsService",
   "move_group/MoveGroupExecuteTrajectoryAction",
   "move_group/MoveGroupMoveAction",
   "move_group/MoveGroupPlanService",
   "move_group/MoveGroupQueryPlannersService",
   "move_group/MoveGroupStateValidationService",
   "move_group/MoveGroupGetPlanningSceneService",
   "move_group/ApplyPlanningSceneService",
   "move_group/ClearOctomapService",
};
// clang-format on
 
class MoveGroupExe
{
public:
  MoveGroupExe(const moveit_cpp::MoveItCppPtr& moveit_cpp, const std::string& default_planning_pipeline, bool debug)
  {
    // if the user wants to be able to disable execution of paths, they can just set this ROS param to false
    bool allow_trajectory_execution;
    moveit_cpp->getNode()->get_parameter_or("allow_trajectory_execution", allow_trajectory_execution, true);
 
    context_ =
        std::make_shared<MoveGroupContext>(moveit_cpp, default_planning_pipeline, allow_trajectory_execution, debug);
 
    // start the capabilities
    configureCapabilities();
  }
 
  ~MoveGroupExe()
  {
    capabilities_.clear();
    context_.reset();
    capability_plugin_loader_.reset();
  }
 
  void status()
  {
    if (context_)
    {
      if (context_->status())
      {
        if (capabilities_.empty())
          printf(MOVEIT_CONSOLE_COLOR_BLUE "\nmove_group is running but no capabilities are "
                                           "loaded.\n\n" MOVEIT_CONSOLE_COLOR_RESET);
        else
          printf(MOVEIT_CONSOLE_COLOR_GREEN "\nYou can start planning now!\n\n" MOVEIT_CONSOLE_COLOR_RESET);
        fflush(stdout);
      }
    }
    else
      RCLCPP_ERROR(LOGGER, "No MoveGroup context created. Nothing will work.");
  }
 
  MoveGroupContextPtr getContext()
  {
    return context_;
  }
 
private:
  void configureCapabilities()
  {
    try
    {
      capability_plugin_loader_ = std::make_shared<pluginlib::ClassLoader<MoveGroupCapability>>(
          "moveit_ros_move_group", "move_group::MoveGroupCapability");
    }
    catch (pluginlib::PluginlibException& ex)
    {
      RCLCPP_FATAL_STREAM(LOGGER, "Exception while creating plugin loader for move_group capabilities: " << ex.what());
      return;
    }
 
    std::set<std::string> capabilities;
 
    // add default capabilities
    for (const char* capability : DEFAULT_CAPABILITIES)
      capabilities.insert(capability);
 
    // add capabilities listed in ROS parameter
    std::string capability_plugins;
    if (context_->moveit_cpp_->getNode()->get_parameter("capabilities", capability_plugins))
    {
      boost::char_separator<char> sep(" ");
      boost::tokenizer<boost::char_separator<char>> tok(capability_plugins, sep);
      capabilities.insert(tok.begin(), tok.end());
    }
 
    // add capabilities configured for planning pipelines
    for (const auto& pipeline_entry : context_->moveit_cpp_->getPlanningPipelines())
    {
      const auto& pipeline_name = pipeline_entry.first;
      std::string pipeline_capabilities;
      if (context_->moveit_cpp_->getNode()->get_parameter("planning_pipelines/" + pipeline_name + "/capabilities",
                                                          pipeline_capabilities))
      {
        boost::char_separator<char> sep(" ");
        boost::tokenizer<boost::char_separator<char>> tok(pipeline_capabilities, sep);
        capabilities.insert(tok.begin(), tok.end());
      }
    }
 
    // drop capabilities that have been explicitly disabled
    if (context_->moveit_cpp_->getNode()->get_parameter("disable_capabilities", capability_plugins))
    {
      boost::char_separator<char> sep(" ");
      boost::tokenizer<boost::char_separator<char>> tok(capability_plugins, sep);
      for (boost::tokenizer<boost::char_separator<char>>::iterator cap_name = tok.begin(); cap_name != tok.end();
           ++cap_name)
        capabilities.erase(*cap_name);
    }
 
    for (const std::string& capability : capabilities)
    {
      try
      {
        printf(MOVEIT_CONSOLE_COLOR_CYAN "Loading '%s'...\n" MOVEIT_CONSOLE_COLOR_RESET, capability.c_str());
        MoveGroupCapabilityPtr cap = capability_plugin_loader_->createUniqueInstance(capability);
        cap->setContext(context_);
        cap->initialize();
        capabilities_.push_back(cap);
      }
      catch (pluginlib::PluginlibException& ex)
      {
        RCLCPP_ERROR_STREAM(LOGGER,
                            "Exception while loading move_group capability '" << capability << "': " << ex.what());
      }
    }
 
    std::stringstream ss;
    ss << '\n';
    ss << '\n';
    ss << "********************************************************" << '\n';
    ss << "* MoveGroup using: " << '\n';
    for (const MoveGroupCapabilityPtr& cap : capabilities_)
      ss << "*     - " << cap->getName() << '\n';
    ss << "********************************************************" << '\n';
    RCLCPP_INFO(LOGGER, "%s", ss.str().c_str());
  }
 
  MoveGroupContextPtr context_;
  std::shared_ptr<pluginlib::ClassLoader<MoveGroupCapability>> capability_plugin_loader_;
  std::vector<MoveGroupCapabilityPtr> capabilities_;
};
}  // namespace move_group
 
int main(int argc, char** argv)
{
  rclcpp::init(argc, argv);
 
  rclcpp::NodeOptions opt;
  opt.allow_undeclared_parameters(true);
  opt.automatically_declare_parameters_from_overrides(true);
  rclcpp::Node::SharedPtr nh = rclcpp::Node::make_shared("move_group", opt);
  moveit_cpp::MoveItCpp::Options moveit_cpp_options(nh);
 
  // Prepare PlanningPipelineOptions
  moveit_cpp_options.planning_pipeline_options.parent_namespace = nh->get_effective_namespace() + ".planning_pipelines";
  std::vector<std::string> planning_pipeline_configs;
  if (nh->get_parameter("planning_pipelines", planning_pipeline_configs))
  {
    if (planning_pipeline_configs.empty())
    {
      RCLCPP_ERROR(LOGGER, "Failed to read parameter 'move_group.planning_pipelines'");
    }
    else
    {
      for (const auto& config : planning_pipeline_configs)
      {
        moveit_cpp_options.planning_pipeline_options.pipeline_names.push_back(config);
      }
    }
  }
 
  // Retrieve default planning pipeline
  auto& pipeline_names = moveit_cpp_options.planning_pipeline_options.pipeline_names;
  std::string default_planning_pipeline;
  if (nh->get_parameter("default_planning_pipeline", default_planning_pipeline))
  {
    // Ignore default_planning_pipeline if there is no matching entry in pipeline_names
    if (std::find(pipeline_names.begin(), pipeline_names.end(), default_planning_pipeline) == pipeline_names.end())
    {
      RCLCPP_WARN(LOGGER,
                  "MoveGroup launched with ~default_planning_pipeline '%s' not configured in ~planning_pipelines",
                  default_planning_pipeline.c_str());
      default_planning_pipeline = "";  // reset invalid pipeline id
    }
  }
  else if (pipeline_names.size() > 1)  // only warn if there are multiple pipelines to choose from
  {
    // Handle deprecated move_group.launch
    RCLCPP_WARN(LOGGER,
                "MoveGroup launched without ~default_planning_pipeline specifying the namespace for the default "
                "planning pipeline configuration");
  }
 
  // If there is no valid default pipeline, either pick the first available one, or fall back to old behavior
  if (default_planning_pipeline.empty())
  {
    if (!pipeline_names.empty())
    {
      RCLCPP_WARN(LOGGER, "Using default pipeline '%s'", pipeline_names[0].c_str());
      default_planning_pipeline = pipeline_names[0];
    }
    else
    {
      RCLCPP_WARN(LOGGER, "Falling back to using the the move_group node namespace (deprecated behavior).");
      default_planning_pipeline = "move_group";
      moveit_cpp_options.planning_pipeline_options.pipeline_names = { default_planning_pipeline };
      moveit_cpp_options.planning_pipeline_options.parent_namespace = nh->get_effective_namespace();
    }
 
    // Reset invalid pipeline parameter for MGI requests
    nh->set_parameter(rclcpp::Parameter("default_planning_pipeline", default_planning_pipeline));
  }
 
  // Initialize MoveItCpp
  const auto tf_buffer = std::make_shared<tf2_ros::Buffer>(nh->get_clock(), tf2::durationFromSec(10.0));
  const auto moveit_cpp = std::make_shared<moveit_cpp::MoveItCpp>(nh, moveit_cpp_options, tf_buffer);
  const auto planning_scene_monitor = moveit_cpp->getPlanningSceneMonitor();
 
  if (planning_scene_monitor->getPlanningScene())
  {
    bool debug = false;
    for (int i = 1; i < argc; ++i)
      if (strncmp(argv[i], "--debug", 7) == 0)
      {
        debug = true;
        break;
      }
    debug = true;
    if (debug)
      RCLCPP_INFO(LOGGER, "MoveGroup debug mode is ON");
    else
      RCLCPP_INFO(LOGGER, "MoveGroup debug mode is OFF");
 
    rclcpp::executors::MultiThreadedExecutor executor;
 
    move_group::MoveGroupExe mge(moveit_cpp, default_planning_pipeline, debug);
 
    bool monitor_dynamics;
    if (nh->get_parameter("monitor_dynamics", monitor_dynamics) && monitor_dynamics)
    {
      RCLCPP_INFO(LOGGER, "MoveGroup monitors robot dynamics (higher load)");
      planning_scene_monitor->getStateMonitor()->enableCopyDynamics(true);
    }
 
    planning_scene_monitor->publishDebugInformation(debug);
 
    mge.status();
    executor.add_node(nh);
    executor.spin();
 
    rclcpp::shutdown();
  }
  else
    RCLCPP_ERROR(LOGGER, "Planning scene not configured");
 
  return 0;
}